ADVANCES in APPLIED INFORMATION SCIENCE - WSEAS

Advances in Applied Information SciencePlenary Lecture 3On Improved Modeling of Survivability-Supported Traffic Engineering in Multi-ServiceNetworksProfessor Dimitris KarrasChalkis Institute of TechnologyDept. Automation, Evoia, GreeceE-mail: dakarras@hotmail.comAbstract: In this plenary lecture, a number of optimisation models and iterate heuristic algorithms that address thesurvivability-supported Traffic Engineering (TE) problem in multi-service networks for multimedia are presented. Insuch networks traffic demands with different Quality of Service (QoS) and survivability requirements (e.g. existence ofa node disjoint backup path for each primary path) inhere. The optimisation models for engineering the QoS trafficwith different survivability prerequisites and the Best-Effort (BE) traffic are based on special admission control/routingMixed Integer Programming (MIP) and Linear Programming (LP) optimisation sub-problems, which are solvedsequentially. LP relaxations of the MIP sub-problems are also provided. The iterative heuristic TE algorithms arebased on a modified version of the Dijkstra's algorithm. The above methods are used for the solution of the TEproblem in two different networks and their performance is compared. An integrated approach based on theaforementioned work, for prioritised 1:1/1+1 protection and restoration-supported TE in multi-service networks, in thecase of single or multiple node/link failure(s), is also presented and tested.Brief Biography of the Speaker: Dimitrios A. Karras received his Diploma and M.Sc. Degree in Electrical andElectronic Engineering from the National Technical University of Athens, Greece in 1985 and the Ph. Degree inElectrical Engineering, from the National Technical University of Athens, Greece in 1995, with honours. From 1990and up to 2004 he has collaborated as visiting professor and researcher with several universities and researchinstitutes in Greece. Since 2004, after his election, he has been with the Chalkis Institute of Technology, AutomationDept., Greece as associate professor in Digital Systems and Signal Processing as well as with the Hellenic OpenUniversity, Dept. Informatics as a visiting professor in Communication Systems (since 2002 and up to 2010). He haspublished more than 50 research refereed journal papers in various areas of pattern recognition, image/signalprocessing and neural networks as well as in bioinformatics and telecommunications and more than 150 researchpapers in International refereed scientific Conferences. His research interests span the fields of pattern recognitionand neural networks, image and signal processing, image and signal systems, biomedical systems, communications,networking and security. He has served as program committee member in many international conferences, as well asprogram chair and general chair in several international workshops and conferences in the fields of signal, image andautomation systems. He is, also, editor in chief of the International Journal in Signal and Imaging SystemsEngineering (IJSISE), topics editor in chief of the International Journal of Digital Content Technology and itsApplications (JDCTA) as well as associate editor in various scientific journals. He has been cited in more than 380research papers, his h-index is 10 and his Erdos number is 5.ISBN: 978-1-61804-113-5 15